INVESTIGADORES
PERELLO Analia Edith
artículos
Título:
Pathogenic and molecular variability among isolates of Pyrenophora tritici repentis causal agent of tan spt of wheat inArgentina
Autor/es:
MORENO, V.; STENGLEIN, S.; BALATTI, P.; PERELLÓ, A.
Revista:
EUROPEAN JOURNAL OF PLANT PATHOLOGY
Editorial:
SPRINGER
Referencias:
Lugar: New York; Año: 2008 vol. 122 p. 239 - 252
ISSN:
0929-1873
Resumen:
Tan spot, caused by Pyrenophora tritici-repentis is a common disease of wheat responsable for economic losses insome wheat growing areas wordwide. In this study the pathogenic and genetic diversity of 51 P.tritici repentis isolates collected from different ecological regions of Argentina were analyzed. Virulence tests were conducted on 10 selected wheat cultivars. Date revealed significant differences between all main factors evaluated and the interactions for 19 of the isolates analyzed. Base don the reaction type of each isolate/cultivar combination, 48 different pathogenic patterns were detected. The molecular analysis (ISSR) revealed the existance of 36 haplotypes among 37 isolates. P. triticirepentis on wheat in Argentina isa a heterogeneous fungus, implying that screening wheat germoplasm for resistance to tan spot requires a wide range of pathogen isolates.
